huge refactor of plugin system

SYS/plugin_config.py

@@ -7,7 +7,7 @@ from typing import Any, Dict, Iterable, List, Optional
 
 from SYS.config import global_config
 from ProviderCore.registry import get_plugin_class, list_plugins
-from Store.registry import _discover_store_classes, _required_keys_for
+from Store.registry import _discover_store_classes, _required_keys_for, _resolve_store_class
 
 logger = logging.getLogger(__name__)
 
@@ -54,8 +54,7 @@ def _call_schema(owner: Any, label: str) -> List[ConfigField]:
 
 
 def get_store_schema(store_type: str) -> List[ConfigField]:
-    classes = _discover_store_classes()
-    cls = classes.get(str(store_type or "").strip())
+    cls = _resolve_store_class(str(store_type or "").strip())
     if cls is None:
         return []
     return _call_schema(cls, f"store '{store_type}'")
@@ -115,8 +114,7 @@ def build_default_store_config(store_type: str, instance_name: str) -> Dict[str,
             config[key] = field.get("default", "")
         return config
 
-    classes = _discover_store_classes()
-    cls = classes.get(str(store_type or "").strip())
+    cls = _resolve_store_class(str(store_type or "").strip())
     if cls is None:
         return config
     for required_key in _required_keys_for(cls):
@@ -174,8 +172,7 @@ def get_required_config_keys(item_type: str, item_name: str) -> List[str]:
 
     if normalized_type.startswith("store-"):
         store_type = normalized_type.replace("store-", "", 1)
-        classes = _discover_store_classes()
-        cls = classes.get(store_type)
+        cls = _resolve_store_class(store_type)
         if cls is not None:
             for required_key in _required_keys_for(cls):
                 _add_key(required_key)